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202篇 您的检索式:作者名="Michael Hu"
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1Bone Morphogenetic Protein (BMP) signaling in development and human diseases显示文摘Bone Morphogenetic Proteins(BMPs)are a group of signaling molecules that belongs to the Transforming Growth Factor-b(TGF-b)superfamily of proteins.Initially discovered for their ability to induce bone formation,BMPs are now known to play crucial roles in all organ systems.BMPs are important in embryogenesis and development,and also in maintenance of adult tissue homeostasis.Mouse knockout models of various components of the BMP signaling pathway result in embryonic lethality or marked defects,highlighting the essential functions of BMPs.In this review,we first outline the basic aspects of BMP signaling and then focus on genetically manipulated mouse knockout models that have helped elucidate the role of BMPs in development.A significant portion of this review is devoted to the prominent human pathologies associated with dysregulated BMP signaling.Richard N.Wang Jordan Green Zhongliang Wang Youlin Deng Min Qiao Michael Peabody Qian Zhang Jixing Ye Zhengjian Yan Sahitya Denduluri Olumuyiwa Idowu Melissa Li Christine Shen Alan Hu Rex C.Haydon Richard Kang James Mok Michael J.Lee Hue L.Luu Lewis L.Shi 2014Genes & Diseases2014,1,1:47
2Suppression of m6A reader Ythdf2 promotes hematopoietic stem cell expansion显示文摘Zhenrui Li Pengxu Qian Wanqing Shao Hailing Shi Xi C. He Madelaine Gogol Zulin Yu Yongfu Wang Meijie Qi Yunfei Zhu John M. Perry Kai Zhang Fang Tao Kun Zhou Deqing Hu Yingli Han Chongbei Zhao Richard Alexander Hanzhang Xu Shiyuan Chen Allison Peak Kathyrn Hall Michael Peterson Anoja Perera Jeffrey S. Haug Tari Parmely Hua Li Bin Shen Julia Zeitlinger Chuan He Linheng Li 2018Cell Research2018,28,9:18
3Wnt and BMP signaling crosstalk in regulating dental stem cells:Implications in dental tissue engineering显示文摘Tooth is a complex hard tissue organ and consists of multiple cell types that are regulated by important signaling pathways such as Wnt and BMP signaling.Serious injuries and/or loss of tooth or periodontal tissues may significantly impact aesthetic appearance,essential oral functions and the quality of life.Regenerative dentistry holds great promise in treating oral/dental disorders.The past decade has witnessed a rapid expansion of our understanding of the biological features of dental stem cells,along with the signaling mechanisms governing stem cell self-renewal and differentiation.In this review,we first summarize the biological characteristics of seven types of dental stem cells,including dental pulp stem cells,stem cells from apical papilla,stem cells from human exfoliated deciduous teeth,dental follicle precursor cells,periodontal ligament stem cells,alveolar bone-derived mesenchymal stem cells(MSCs),and MSCs from gingiva.We then focus on how these stem cells are regulated by bone morphogenetic protein(BMP)and/or Wnt signaling by examining the interplays between these pathways.Lastly,we analyze the current status of dental tissue engineering strategies that utilize oral/dental stem cells by harnessing the interplays between BMP and Wnt pathways.We also highlight the challenges that must be addressed before the dental stem cells may reach any clinical applications.Thus,we can expect to witness significant progresses to be made in regenerative dentistry in the coming decade.Fugui Zhang Jinlin Song Hongmei Zhang Enyi Huang Dongzhe Song Viktor Tollemar Jing Wang Jinhua Wang Maryam Mohammed Qiang Wei Jiaming Fan Junyi Liao Yulong Zou Feng Liu Xue Hu Xiangyang Qu Liqun Chen Xinyi Yu Hue H.Luu Michael J.Lee Tong-Chuan He Ping Ji 2016Genes & Diseases2016,3,4:16
4The Deep-Time Digital Earth program:data-driven discovery in geosciences显示文摘Current barriers hindering data-driven discoveries in deep-time Earth(DE)include:substantial volumes of DE data are not digitized;many DE databases do not adhere to FAIR(findable,accessible,interoperable and reusable)principles;we lack a systematic knowledge graph for DE;existing DE databases are geographically heterogeneous;a significant fraction of DE data is not in open-access formats;tailored tools are needed.These challenges motivate the Deep-Time Digital Earth(DDE)program initiated by the International Union of Geological Sciences and developed in cooperation with national geological surveys,professional associations,academic institutions and scientists around the world.DDE’s mission is to build on previous research to develop a systematic DE knowledge graph,a FAIR data infrastructure that links existing databases and makes dark data visible,and tailored tools for DE data,which are universally accessible.DDE aims to harmonize DE data,share global geoscience knowledge and facilitate data-driven discovery in the understanding of Earth’s evolution.Chengshan Wang Robert MHazen Qiuming Cheng Michael HStephenson Chenghu Zhou Peter Fox Shu-zhong Shen Roland Oberhansli Zengqian Hou Xiaogang Ma Zhiqiang Feng Junxuan Fan Chao Ma Xiumian Hu Bin Luo Juanle Wang Craig M.Schiffries 2021National Science Review2021,8,9:14
5Boceprevir,GC-376,and calpain inhibitors Ⅱ,Ⅻ inhibit SARS-CoV-2 viral replication by targeting the viral main protease显示文摘A new coronavirus SARS-CoV-2,also called novel coronavirus 2019(2019-nCoV),started to circulate among humans around December 2019,and it is now widespread as a global pandemic.The disease caused by SARS-CoV-2 virus is called COVID-19,which is highly contagious and has an overall mortality rate of 6.35%as of May 26,2020.There is no vaccine or antiviral available for SARS-CoV-2.In this study,we report our discovery of inhibitors targeting the SARS-CoV-2 main protease(Mpro).Using the FRET-based enzymatic assay,several inhibitors including boceprevir,GC-376,and calpain inhibitorsⅡ,andⅫwere identified to have potent activity with single-digit to submicromolar ICs0 values in the enzymatic assay.The mechanism of action of the hits was further characterized using enzyme kinetic studies,thermal shift binding assays,and native mass spectrometry.Significantly,four compounds(boceprevir,GC-376,calpain inhibitorsⅡandⅫ)inhibit SARS-CoV-2 viral replication in cell culture with EC50 values ranging from 0.49 to 3.37μM.Notably,boceprevir,calpain inhibitorsⅡandⅫrepresent novel chemotypes that are distinct from known substrate-based peptidomimetic Mpro inhibitors.A complex crystal structure of SARS-CoV-2 Mpro with GC-376,determined at 2.15(A)resolution with three protomers per asymmetric unit,revealed two unique binding configurations,shedding light on the molecular interactions and protein conformational flexibility underlying substrate and inhibitor binding by Mpro.Overall,the compounds identified herein provide promising starting points for the further development of SARS-CoV-2 therapeutics.Chunlong Ma Michael Dominic Sacco Brett Hurst Julia Alma Townsend Yanmei Hu Tommy Szeto Xiujun Zhang Bart Tarbet Michael Thomas Marty Yu Chen Jun Wang 2020Cell Research2020,30,8:13
6Hepatitis B virus reactivation and hepatitis in diffuse large B-cell lymphoma patients with resolved hepatitis B receiving rituximab-containing chemotherapy:risk factors and survival显示文摘Introduction:Hepatitis B virus(HBV) reactivation has been reported in B-cell lymphoma patients with resolved hepatitis B(hepatitis B surface antigen[HBsAg]-negative and hepatitis B core antibody[HBcAb]-positive).This study aimed to assess HBV reaaivation and hepatitis occurrence in diffuse large B-cell lymphoma(DLBCL) patients with resolved hepatitis B receiving rituximab-containing chemotherapy compared with HBsAg-negative/HBcAb-negative patients to identify risk factors for HBV reaaivation and hepatitis occurrence and to analyze whether HBV reaaivation and hepatitis affect the survival of DLBCL patients with resolved hepatitis B.Methods:We reviewed the clinical data of 278 patients with DLBCL treated with rituximab-containing therapy between January 2004 and May 2008 at Sun Yat-sen University Cancer Center,China.Prediaive faaors for HBV reaaivation,hepatitis development,and survival were examined by univariate analysis using the chi-square or Fisher's exact test and by multivariate analysis using the Cox regression model.Results:Among the 278 patients,165 were HBsAg-negative.Among these 165 patients,6(10.9%) of 55 HBcAb-positive(resolved HBV infeaion) patients experienced HBV reactivation compared with none(0%) of 110 HBcAb-negative patients(P=0.001).Patients with resolved hepatitis B had a higher hepatitis occurrence rate than HBsAg-negative/HBcAb-negative patients(21.8%vs.8.2%,P = 0.013).HBcAb positivity and elevated baseline alanine aminotransferase(ALT) levels were independent risk factors for hepatitis.Among the 55 patients with resolved hepatitis B,patients with elevated baseline serum ALT or aspartate aminotransferase(AST) levels were more likely to develop hepatitis than those with normal serum ALT or AST levels(P = 0.037,P = 0.005,respeaively).An elevated baseline AST level was an independent risk factor for hepatitis in these patients.Six patients with HBV reactivation recovered after immediate antiviral therapy,and chemotherapy was continued.HBcAb positivity,HBV reactivation,or hepatitis did not negatively affect the survival of DLBCL patients.Conclusions:DLBCL patients with resolved hepatitis B may have a higher risk of developing HBV reaaivation and hepatitis than HBsAg-negative/HBcAb-negative patients.Close monitoring and prompt antiviral therapy are required in these patients.Kai-Lin Chen Jie Chen Hui-Lan Rao Ying Guo Hui-Qiang Huang Liang Zhang Jian-Yong Shao Tong-Yu Lin Wen-Qi Jiang De-Hui Zou Li-Yang Hu Michael Lucas Wirian Qing-Qing Cai 2015Chinese Journal of Cancer2015,34,5:11
7Thermal expansion of kyanite at ambient pressure:An X-ray powder diffraction study up to 1000℃显示文摘The thermal expansion coefficients of kyanite at ambient pressure have been investigated by an X-ray powder diffraction technique with temperatures up to 1000℃.No phase transition was observed in the experimental temperature range.Data for the unit-cell parameters and temperatures were fitted empirically resulting in the following thermal expansion coefficients:α_a = 5.8(3)×10^(-5).α_b = 5.8 (1)×10^(-5),α_c = 5.2(1)×10^(-5),andα_V = 7.4(1)×10^(-3)℃^(-1),in good agreement with a recent neutron powder diffraction study.On the other hand,the variation of the unit-cell anglesα,βand y of kyanite with increase in temperature is very complicated,and the agreement among all studies is poor.The thermal expansion data at ambient pressure reported here and the compression data at ambient temperature from the literature suggest that,for the kyanite lattice,the most and least thermally expandable directions correspond to the most and least compressible directions,respectively.Xi Liu Qiang He Hejing Wang Michael E. Fleet Xiaomin Hu 2010Geoscience Frontiers2010,1,1:11
8First dark matter search results from the PandaX-Ⅰ experiment显示文摘We report on the first dark-matter(DM)search results from PandaX-I,a low threshold dual-phase xenon experiment operating at the China JinPing Underground Laboratory.In the 37-kg liquid xenon target with 17.4 live-days of exposure,no DM particle candidate event was found.This result sets a stringent limit for low-mass DM particles and disfavors the interpretation of previously-reported positive experimental results.The minimum upper limit,3.7×10-44cm2,for the spin-independent isoscalar DM-particle-nucleon scattering cross section is obtained at a DM-particle mass of 49 GeV/c2at 90%confidence level.XIAO MengJiao XIAO Xiang ZHAO Li CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HU Jie HUANG XingTao JI XiangDong JU YongLin LEI SiAo LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing STEPHENSON Scott TAN AnDi TARL Greg WANG HongWei WANG JiMin WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIE PengWei YOU YingHui ZENG XiongHui ZHANG Hua ZHANG Tao ZHU ZhongHua 2014Science China(Physics,Mechanics & Astronomy)2014,57,11:10
9PandaX: a liquid xenon dark matter experiment at CJPL显示文摘PandaX is a large liquid-xenon detector experiment usable for direct dark-matter detection and 136Xe double-beta decay search.The central vessel was designed to accommodate a staged target volume increase from initially 120 kg(stage I)to 0.5 t(stage II)and eventually to a multi-ton scale.The experiment is located in the Jinping Deep-Underground Laboratory in Sichuan,China.The detector operates in dual-phase mode,allowing detection of both prompt scintillation,and ionization charge through proportional scintillation.In this paper a detailed description of the stage I detector design and performance as well as results established during the commissioning phase are presented.CAO XiGuang CHEN Xun CHEN YunHua CUI XiangYi FANG DeQing FU ChangBo GIBONI Karl L. GONG HaoWei GUO GuoDong HE Ming HU Jie HUANG XingTao JI XiangDong JU YongLin LI ShaoLi LIN Qing LIU HuaXuan LIU JiangLai LIU Xiang LORENZON Wolfgang MA YuGang MAO YaJun NI KaiXuan PUSHKIN Kirill REN XiangXiang SCHUBNELL Michael SHEN ManBing SHI YuJie STEPHENSON Scott TAN AnDi TARLé Greg WANG HongWei WANG JiMing WANG Meng WANG XuMing WANG Zhou WEI YueHuan WU ShiYong XIAO MengJiao XIAO Xiang XIE PengWei YE Tao YOU YingHui ZEN XiongHui ZHANG Hua ZHANG Tao ZHAO HaiYing ZHAO Li ZHOU XiaoPeng ZHU ZhongHua 2014Science China(Physics,Mechanics & Astronomy)2014,57,8:9
10Assessing environmental factors associated with regional schistosomiasis prevalence in Anhui Province,Peoples’Republic of China using a geographical detector method显示文摘Background:Schistosomiasis is a water-borne disease caused by trematode worms belonging to genus Schistosoma,which is prevalent most of the developing world.Transmission of the disease is usually associated with multiple biological characteristics and social factors but also factors can play a role.Few studies have assessed the exact and interactive influence of each factor promoting schistosomiasis transmission.Methods:We used a series of different detectors(i.e.,specific detector,risk detector,ecological detector and interaction detector)to evaluate separate and interactive effects of the environmental factors on schistosomiasis prevalence.Specifically,(i)specific detector quantifies the impact of a risk factor on an observed spatial disease pattern,which were ranked statistically by a value of Power of Determinate(PD)calculation;(ii)risk detector detects high risk areas of a disease on the condition that the study area is stratified by a potential risk factor;(iii)ecological detector explores whether a risk factor is more significant than another in controlling the spatial pattern of a disease;(iv)interaction detector probes whether two risk factors when taken together weaken or enhance one another,or whether they are independent in developing a disease.Infection data of schistosomiasis based on conventional surveys were obtained at the county level from the health authorities in Anhui Province,China and used in combination with information from Chinese weather stations and internationally available environmental data.Results:The specific detector identified various factors of potential importance as follows:Proximity to Yangtze River(0.322)>Land cover(0.285)>sunshine hours(0.256)>population density(0.109)>altitude(0.090)>the normalized different vegetation index(NDVI)(0.077)>land surface temperature at daytime(LST_(day))(0.007).The risk detector indicated that areas of schistosomiasis high risk were located within a buffer distance of 50 km from Yangtze River.The ecological detector disclosed that the factors investigated have significantly different effects.The interaction detector revealed that interaction between the factors enhanced their main effects in most cases.Conclusion:Proximity to Yangtze River had the strongest effect on schistosomiasis prevalence followed by land cover and sunshine hours,while the remaining factors had only weak influence.Interaction between factors played an even more important role in influencing schistosomiasis prevalence than each factor on its own.High risk regions influenced by strong interactions need to be targeted for disease control intervention.Yi Hu Congcong Xia Shizhu Li Michael PWard Can Luo Fenghua Gao Qizhi Wang Shiqing Zhang Zhijie Zhang 2017Infectious Diseases of Poverty2017,6,1:9
11声波激励的超小型纳机电系统磁电天线显示文摘当前的小型天线依赖于电磁波的谐振,因此天线的尺寸与电磁波波长相关。典型的天线尺寸大于波长的1/10,而进一步缩小天线尺寸在近十年来都是一个公开的挑战。介绍一种通过悬浮铁氧/压电薄膜异质结构的声波激励纳机械磁电天线。这种磁电天线通过其在声波谐振频率处的磁电效应接收和发射电磁波。磁电天线中的体声波激发铁磁薄膜的磁化振荡,产生电磁波的辐射;反之,天线感应电磁波的磁场,得到压电电压输出。这种磁电天线(尺寸仅为波长的千分之一)比现有小型天线的尺寸小1到2个数量级,但性能却没有降低,在便携式无线通信系统中具有很大的应用潜力。Tianxiang Nan Hwaider Lin Yuan Gao Alexei Matyushov Guoliang Yu Huaihao Chen Neville Sun Shengjun Wei Zhiguang Wang Menghui Li Xinjun Wang Amine Belkessam Rongdi Guo Brian Chen James Zhou Zhenyun Qian Yu Hui Matteo Rinaldi Michael E.McConney BrANDon M.Howe Zhongqiang Hu John G.Jones Gail J.Brown Nian Xiang Sun 张建强(翻译) 陈鼎鼎(审校) 2017通信对抗2017,36,4:8
12Electrochemical measurements used for assessment of corrosion and protection of metallic materials in the field:A critical review显示文摘Corrosion degradation is detrimental to metal structures as it shortens their lifetime and leads to huge economic losses and unexpected disasters.Therefore,the detection and monitoring of corrosion degradation is of great importance.Herein,we briefly review the state-of-the-art electrochemical methods,instrumentation(based on virtual instrumentation),and advanced sensor/probes that are used in the field for the assessment of corrosion damage.Typical corrosion monitoring results,some of which have been obtained at Tianjin University in the past 30 years,for metallic materials and organic coating/metal systems in atmospheric,marine,and soil conditions in the field are presented.Detection methods,data analysis,and theoretical and mathematical models regarding each corrosion system are discussed,and the challenges,problems and possible solutions for each case are suggested.Lastly,future developments,such as wireless,intelligent,and automatic electrochemical measurement,that will augment the present electrochemical methods of evaluating corrosion degradation are summarized.Da-Hai Xia Cheng-Man Deng Digby Macdonald Sina Jamali Douglas Mills Jing-Li Luo Michael G.Strebl Mehdi Amiri Weixian Jin Shizhe Song Wenbin Hu 2022Journal of Materials Science & Technology2022,,17:8
13Optical observations of LIGO source GW 170817 by the Antarctic Survey Telescopes at Dome A,Antarctica显示文摘The LIGO detection of gravitational waves(GW) from merging black holes in 2015 marked the beginning of a new era in observational astronomy. The detection of an electromagnetic signal from a GW source is the critical next step to explore in detail the physics involved. The Antarctic Survey Telescopes(AST3),located at Dome A, Antarctica, is uniquely situated for rapid response time-domain astronomy with its continuous night-time coverage during the austral winter. We report optical observations of the GW source(GW 170817) in the nearby galaxy NGC 4993 using AST3. The data show a rapidly fading transient at around 1 day after the GW trigger, with the i-band magnitude declining from 17:23 ± 0:13 magnitude to 17:72 ± 0:09 magnitude in ~1:8 h. The brightness and time evolution of the optical transient associated with GW 170817 are broadly consistent with the predictions of models involving merging binary neutron stars. We infer from our data that the merging process ejected about ~10^(-2) solar mass of radioactive material at a speed of up to 30% the speed of light.lei hu xuefeng wu igor andreoni michael c.b.ashley jeff cooke xiangqun cui fujia du zigao dai bozhong gu yi hu haiping lu xiaoyan li zhengyang li ensi liang liangduan liu bin ma zhaohui shang tianrui sun n.b.suntzeff charling tao syed a.uddin lifan wang xiaofeng wang haikun wen di xiao jin xu ji yang shihai yang xiangyan yuan hongyan zhou hui zhang jilin zhou zonghong zhu 2017Science Bulletin2017,62,21:6
14K-ras^G12V transformation leads to mitochondrial dysfunction and a metabolic switch from oxidative phosphorylation to glycolysis显示文摘增加的氧气的 glycolysis 和氧化应力是癌症房间新陈代谢的重要特征,但是内在的生物化学、分子的机制留下逃犯。用四圜素可诱导的模型,我们显示出 K 地岬 G12V 原因 mitochondrial 机能障碍,导致反应的氧的减少的呼吸,提高的 glycolysis,和增加的产生种类。K 地岬蛋白质与线粒体被联系,并且导致呼吸的链建筑群的快速的抑制 -- 我和在由影响 cyclosporin 敏感的渗透的 mitochondrial transmembrane 潜力的减少转移毛孔。而且, K 地岬 在 vitro 的 G12V 表示提高转变房间的能力允许新陈代谢的改编到高 glycolytic 新陈代谢在 vivo 形成肿瘤。我们的学习建议 mitochondrial 机能障碍的那正式就职是由 K 地岬 G12V 在癌症房间引起新陈代谢的变化和 ROS 应力,并且支持肿瘤开发。Yumin Hu Weiqin Lu Gang Chen Peng Wang Zhao Chen Yan Zhou Marcia Ogasawara Dunyaporn Trachootham Li Feng Helene Pelicano Paul J Chiao Michael J Keating Guillermo Garcia-Manero Peng Huang 2012Cell Research2012,22,2:6
15Stable carbon and nitrogen isotope evidence of human and pig diets at the Qinglongquan site,China显示文摘Previous studies on the Rice-Millet(foxtail millet and common millet) Blended Zone in Chinese Neolithic have not clearly addressed such questions as the importance of primitive rice-millet mixed agriculture to human lifestyle and livestock managements within this region,the relationship among the development of the agriculture,paleoenvironment,and cultural interactions,and so on.Here stable carbon and nitrogen isotope analysis of human and pig bones from the Qinglongquan site was conducted,covering two cultural phases,namely the Qujialing Culture(3000 BC to 2600 BC) and the Shijiahe Culture(2600 BC to 2200 BC) .Based on this analysis,we further discussed the diets of ancient humans and pigs in the site,investigated the importance of rice-millet mixed agriculture to human and pig diets,and explored the relationship among the primitive rice agriculture and millet agriculture,cultural interactions,and paleoenvironment.The δ13C values of human bone collagen(-16.7‰ to-12.4‰,averaging-14.6‰±1.3‰,n=24) revealed that both C3 and C4 foods were consumed,probably from the contribution of rice(C3 plant) and millets(C4 plants) due to the coexistence of these crops at this site.In addition,the human mean δ13C value suggested that millet agriculture was only minor in human diets.The human δ15N values(6.6‰to 10.8‰,averaging 9.0‰±1.2‰,n=24) showed that animal resources played a significant role in human diets,and varied greatly.The mean δ13C value of the pigs(-14.3‰±2.5‰,n=13) was quite similar to that of the humans,but the mean δ15N value of the pigs was slightly less(1.3‰) .The similar δ13C and δ15N values between humans and pigs suggested that the pigs consumed a lot of humans'food remains.No correlations of the δ13C and δ15N values between humans and pigs showed that both human and pig diets were based mainly on plant foods,which might be related to highly developed rice-millet mixed agriculture at that time. In comparison with the human and pig diets between the two periods,millet agriculture contributed more than 10%in the Shijiahe Culture,if a simple mixing model was used.This apparent dietary shift matched the climatic variation and agricultural development through the time.In warm and humid climate with the expansion of the Qujialing Culture northwards,rice was widely cultivated.However,when the climate was cold and arid,northern culture was expanding southwards.Thus,millet agriculture became more important.GUO Yi HU YaoWu ZHU JunYing ZHOU Mi WANG ChangSui Michael P. RICHARDS 2011Science China Earth Sciences2011,54,4:6
16Holocene environmental changes around Xiaohe Cemetery and its effects on human occupation, Xinjiang, China显示文摘Xiaohe 公墓考古学的地点(Cal。4-3.5 ka BP ) 是在 Xinjiang 的最重要的青铜时代地点之一,中国。尽管包围环境现在是极其干旱的沙漠,丰富的考古学的遗体显示人的职业在在 Holocene 的某些时期期间是普通的。当地区性的环境在那里是在整个 Holocene 的干旱沙漠时,地调查和 Xiaohe 公墓附近的沉积侧面的实验室分析显示那是在时期 4.8-3.5 ka BP, 2.6-2.1 ka BP 和 1.2-0.9 的地点附近的湖形成的三个事件 ka BP。似地球形状并且当水开始从 Kongque 河被导出然后推延进 Xiaohe 河盆时,水文学调查表明一个湖或湖在一个低区域形成了。在在 4.8-3.5 ka BP 之间的湖的沉积的活跃化学元素的低数量在湖显示丰富、连续的水体积;活跃化学元素的内容在 2.6-2.1 ka BP 之间增加了,但是仍然在一相对低级,建议水和减少的流入的衰退数量。在 1.2-0.9 ka BP 之间,有活跃元素的一个很高的内容,建议减少的水体积并且显示湖是停滞。相反,气候状况在那里看那的将军在这个区域在 2.9-0.9 ka BP 在 8-6 ka BP,在 6-2.9 ka BP 的一个凉爽潮湿的阶段和一个温暖干燥的阶段有一个温暖潮湿的阶段。在 Xiaohe 公墓附近的水文学进化没与气候变化有一对一的通讯。地区性的比较显示宽广规模的气候的条件通过它对 Tarim 河和 Kongque 河的水体积的影响起了一个重要作用。但是,湖的形成和他们的水平被影响了体积多少水能从 Kongque 被推延到 Xiaohe 河的似地球形状的条件控制河。Xiaohe 公墓和附近的区域的人的职业在青铜时代和 Han-Jin 时期(202 BC-420 广告) 期间对应于二个更早的湖时期,当因为减少的水体积,没有人的活动在第三个湖时期存在时。ZHANG Yifei MO Duowen HU Ke BAO Wenbo LI Wenying Idilisi Abuduresule Michael J. STOROZUM Tristram R. KIDDER 2017Journal of Geographical Sciences2017,27,6:6
17New Record of Palaeoscolecids from the Early Cambrian of Yunnan,China显示文摘摘要:新 palaeoscolecid, Guanduscolex 次要的胡,罗 et Fu 情报。et sp。nov,与内向的人和肠的保存软部分来自云南的更低的寒武纪的 Guanshan 动物志,华南。扫描电子显微镜学(SEM ) 揭示的表皮的微结构细节证明每个环忍受三排盘子,每个盘子忍受 910 边缘并且 45 个中央节点。这发现在关系和 palaeoscolecids 和另外的早 priapulids 的进化小径上打开新灯。HU Shixue LI Yong LUO Huilin FU Xiaoping YOU Ting PANG Jiyuan LIU Qi Michael STEINER 2008Acta Geologica Sinica(English Edition)2008,82,2:6
18Millisecond synthesis of CoS nanopartides for highly efficient overall water splitting显示文摘High performance and low-cost electrocatalysts for overall water splitting,i.e.,catalyzing hydrogen and oxygen evolution reactions with the same material,are of great importance for large-scale,renewable energy conversion processes.Here,we report an ultrafast(~7 ms)synthesis tech nique for tran sition metal chalcoge nide n anoparticles assisted by high temperature treatme nt.As a proof of con cept,we dem on strate that cobalt sulfide(~20 nm in diameter)@few-layer graphe ne(~2 nm in thick ness)core-shell nan oparticles embedded in RGO nano sheets exhibit remarkable bifunctional electrocatalytic activity and stability for overall water splitting,which is comparable to commercial 40 wt.%platinum/carbon(Pt/C)electrocatalysts.After 60 h of continuous operation,10 mA crrT?water splitting current density can still be achieved at a low potential of^1.77 V without any activity decay,which is among the most active for non-noble material based electrocatalysts.The presented study provides prospects in synthesizing highly efficient bifunctional electrocatalysts for large-scale energy conversion application via a simple yet efficient technique.Yanan Chen Shaomao Xu Shuze Zhu Rohit Jiji Jacob Glenn Pastel Yanbin Wang Yiju Li Jiaqi Dai Fengjuan Chen Hua Xie Boyang Liu Yonggang Yao Lourdes G. Salamanca-Riba Michael R. Zachariah Teng Li Liangbing Hu 2019Nano Research2019,12,9:6
19High-static-low-dynamic-stiffness vibration isolation enhanced by damping nonlinearity显示文摘High-static-low-dynamic-stiffness(HSLDS) nonlinear isolators have proven to have an advantage over linear isolators, because HSLDS nonlinear isolators allow low-frequency vibration isolation without compromising the static stiffness. Previously, these isolators have generally been assumed to have linear viscous damping, degrading the performance of the isolator at high frequencies. An alternative is to use nonlinear damping, where the nonlinear behavior is achieved by configuring linear dampers so they are orthogonally aligned to the excitation direction. This report compares the performances of single-stage and two-stage isolators with this type of damping with the corresponding isolators containing only linear viscous damping. The results show that both isolators with linear viscous damping and nonlinear damping reduce the transmissibility around the resonance frequencies, but the results show that the isolators with nonlinear damping perform better at high frequencies.LU ZeQi BRENNAN Michael DING Hu CHEN LiQun 2019Science China(Technological Sciences)2019,62,7:5
20RhoA as a target to promote neuronal survival and axon regeneration显示文摘Paralysis following spinal cord injury(SCI) is due to failure of axonal regeneration. It is believed that the capacities of neurons to regrow their axons are due partly to their intrinsic characteristics, which in turn are greatly influenced by several types of inhibitory molecules that are present, or even increased in the extracellular environment of the injured spinal cord. Many of these inhibitory molecules have been studied extensively in recent years. It has been suggested that the small GTPase Rho A is an intracellular convergence point for signaling by these extracellular inhibitory molecules, but due to the complexity of the central nervous system(CNS) in mammals, and the limitation of pharmacological tools, the specific roles of Rho A are unclear. By exploiting the anatomical and technical advantages of the lamprey CNS, we recently demonstrated that Rho A knockdown promotes true axon regeneration through the lesion site after SCI. In addition, we found that Rho A knockdown protects the large, identified reticulospinal neurons from apoptosis after their axons were axotomized in spinal cord. Therefore, manipulation of the Rho A signaling pathway may be an important approach in the development of treatments that are both neuroprotective and axon regeneration-promoting, to enhance functional recovery after SCI.Jianli Hu Michael E. Seizer 2017Neural Regeneration Research2017,12,4:4
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